27440155101 has 4 divisors (see below), whose sum is σ = 36586873472. Its totient is φ = 18293436732.

The previous prime is 27440155013. The next prime is 27440155121. The reversal of 27440155101 is 10155104472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27440155101 - 2¹¹ = 27440153053 is a prime.

It is a super-2 number, since 2×27440155101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27440155121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4573359181 + ... + 4573359186.

It is an arithmetic number, because the mean of its divisors is an integer number (9146718368).

Almost surely, 2^27440155101 is an apocalyptic number.

It is an amenable number.

27440155101 is a deficient number, since it is larger than the sum of its proper divisors (9146718371).

27440155101 is an equidigital number, since it uses as much as digits as its factorization.

27440155101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9146718370.

The product of its (nonzero) digits is 5600, while the sum is 30.

Adding to 27440155101 its reverse (10155104472), we get a palindrome (37595259573).

The spelling of 27440155101 in words is "twenty-seven billion, four hundred forty million, one hundred fifty-five thousand, one hundred one".